Operator Reference

Orb's standard library provides 213+ built-in operators organized into 9 modules. All operators are available as s-expressions in guards and effects.

Modules

Module	Prefix	Operators	Description
Math	math/*	16	Numeric operations for calculations, rounding, clamping, and randomization
String	str/*	26	Text manipulation including formatting, splitting, trimming, and templating
Array	array/*	39	Work with lists and arrays including filtering, mapping, and aggregation
Object	object/*	18	Access and manipulate object properties safely
Time	time/*	25	Work with dates, times, durations, and timestamps
Validate	validate/*	23	Validate user input with common patterns like email, required, length checks
Format	format/*	9	Display formatting for currency, numbers, dates, and file sizes
Async	async/*	8	Control timing with delays, debouncing, retries, and timeouts
Prob	prob/*	16	Distribution sampling, Bayesian inference, statistical summaries

Quick Reference: Core Operators

These operators work without a module prefix:

Operator	Example	Returns
Arithmetic	(+ 1 2)	number
Comparison	(> @entity.x 5)	boolean
Logic	(and true false)	boolean
if	(if cond then else)	any
do	(do expr1 expr2)	last value
set	(set @entity.x 42)	void
get	(get @entity.x)	any
emit	(emit EVENT)	void

See Core Concepts: Standard Library for the complete core operator list.

AVL Operator Visualization

The Almadar Visual Language (AVL) reference page includes color-coded diagrams for operators, showing how s-expressions compose into expression trees. Use AvlExprTree components to visualize operator nesting in your own documentation.